DIGITAL CONTENT SECURITY SYSTEM, PORTABLE STEERING DEVICE AND METHOD OF SECURING DIGITAL CONTENTS
First Claim
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1. A digital content security system for securing digital content, comprising:
- a remote computerized device storing at least a first coding key for encrypting the digital content;
a proximate computerized device communicated with the remote computerized device via a network, having a media playing unit; and
a portable steering device which preloads the encrypted digital content, an authentication key and a second coding key before communicated with the proximate computerized device via an USB connection, wherein the media playing unit is permitted to achieve the second coding key from the portable steering device and thereby decrypt and play back the encrypted digital content, based on a validity of the authentication key which is validated by the remote computerized device and a validity of the first coding key which is validated by the portable steering device.
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Abstract
The present invention discloses a digital content security system and a method that combines information provided by both of a content provider server and a portable steering device to establish multi-way protections of the digital content from reproduction and/or playing of other unauthorized device and hacked intercept of a private key for decrypting the digital content. In application, the portable steering device has a higher compatibility with various network platforms including, for example, any common computer using a Window media player built therein.
26 Citations
21 Claims
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1. A digital content security system for securing digital content, comprising:
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a remote computerized device storing at least a first coding key for encrypting the digital content; a proximate computerized device communicated with the remote computerized device via a network, having a media playing unit; and a portable steering device which preloads the encrypted digital content, an authentication key and a second coding key before communicated with the proximate computerized device via an USB connection, wherein the media playing unit is permitted to achieve the second coding key from the portable steering device and thereby decrypt and play back the encrypted digital content, based on a validity of the authentication key which is validated by the remote computerized device and a validity of the first coding key which is validated by the portable steering device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A portable steering device connected to an external media player, comprising:
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a controller having executable codes at least one portion of which can validate an external first coding key send from the external media player; and a memory unit configured by the controller into a non-reproducible content area which inhibits reproduction to other than the device and preloads an authentication key and a second coding key thereon, and an reproducible content area which preloads encrypted digital content, before the device is connected with the external media player, wherein the authentication key is provided from the non-reproducible content area to the external media player after the device is connected with the external media player, and the second coding key is provided from the non-reproducible content area to the external media player to decrypt the encrypted digital content, based on whether the external first coding key is valid by the portion of the executable code of the controller. - View Dependent Claims (15, 16, 17, 18)
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19. A method of securing digital content in a system which has a remote computerized device, a proximate computerized device and a portable steering device, comprising the following steps of:
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preloading encrypted digital content, an authentication key and a private key into the portable steering device before the portable steering device communicates with the proximate computerized device; sending the authentication key from the portable steering device to the remote computerized device via the proximate computerized device after the portable steering device communicates with the proximate computerized device; if the authentication key is valid by validation of the remote computerized device, sending a public key produced corresponding to the private key, from the remote computerized device to the portable steering device via the proximate computerized device; and if the public key is valid by validation of the portable steering device, sending the private key from the portable steering device to the proximate computerized device thereby playing back the encrypted digital content with decryption the private key in the proximate computerized device. - View Dependent Claims (20, 21)
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Specification